{"product_id":"dorman-m390420-brake-master-cylinder","title":"Dorman M390420 Brake Master Cylinder","description":"\u003ch2\u003eReliable Brake Master Cylinder for Mazda Protege\u003c\/h2\u003e\u003cp\u003eThe Dorman M390420 brake master cylinder is designed specifically for Mazda Protege models, providing precise hydraulic control for your vehicle's braking system. This aluminum master cylinder includes a reservoir and sensor to ensure optimal performance and safety.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMaster cylinder bore diameter: 0.875 inches\u003c\/li\u003e\n\u003cli\u003eConstructed from durable aluminum material\u003c\/li\u003e\n\u003cli\u003eIncludes reservoir for fluid storage\u003c\/li\u003e\n\u003cli\u003eEquipped with a sensor for monitoring brake system status\u003c\/li\u003e\n\u003cli\u003eThree outlets with rearward outlet size M10 x 1.0 and thread pitch 1.0\u003c\/li\u003e\n\u003cli\u003eSecondary outlet thread diameter of 10 mm\u003c\/li\u003e\n\u003cli\u003eMounting hardware not included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Dorman M390420 brake master cylinder is engineered to meet the hydraulic requirements of Mazda Protege vehicles. Its 0.875-inch bore diameter ensures consistent brake fluid pressure, while the aluminum construction offers corrosion resistance and long-lasting durability. The included reservoir allows for proper brake fluid containment, and the integrated sensor provides real-time feedback to the vehicle’s brake system. Featuring three outlets, including a rearward outlet sized M10 x 1.0 with a 1.0 thread pitch, this master cylinder supports efficient brake fluid distribution. Note that mounting hardware is not included with this part.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores proper brake fluid pressure and pedal feel\u003c\/li\u003e\n\u003cli\u003eReplaces leaking or damaged master cylinders\u003c\/li\u003e\n\u003cli\u003eResolves brake warning light activation due to sensor faults\u003c\/li\u003e\n\u003cli\u003eFixes inconsistent braking performance or pedal sinking\u003c\/li\u003e\n\u003cli\u003eAddresses fluid contamination or reservoir damage\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCompatible with Mazda Protege models; verify fitment before installation\u003c\/li\u003e\n\u003cli\u003eBleed brake system thoroughly after installation to remove air\u003c\/li\u003e\n\u003cli\u003eUse appropriate brake fluid as specified by the vehicle manufacturer\u003c\/li\u003e\n\u003cli\u003eEnsure all connections, including sensor wiring and outlet fittings, are secure\u003c\/li\u003e\n\u003cli\u003eMounting hardware must be sourced separately as it is not included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman manufactures the M390420 brake master cylinder to meet or exceed OEM specifications for Mazda Protege vehicles. The aluminum construction and integrated sensor contribute to reliable brake system operation. While mounting hardware is not included, the part undergoes quality checks to ensure proper fit and function. Warranty details should be confirmed with the point of purchase or manufacturer documentation.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":43792167338165,"sku":"BKKX-M390420","price":132.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DB_M390420_Fro.jpg?v=1774997586","url":"https:\/\/www.partcatalog.com\/products\/dorman-m390420-brake-master-cylinder","provider":"PartCatalog","version":"1.0","type":"link"}